03 Reference Standards - 2. Determine Lens Distortions

[que-vector]

Hi, I am trying to work through section 2 in example notebook 3 in version 0.13.2. but I am getting this AttributeError, see below. Could you please help me to solve this?

Thanks!

In [9]: cal.get_elliptical_distortion(mask_radius=10, scale=100, amplitude=1000, asymmetry=0.9,spread=2)

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-13-27e3dbe10698> in <module>
----> 1 cal.get_elliptical_distortion(mask_radius=10,
      2                               scale=100, amplitude=1000,
      3                               asymmetry=0.9,spread=2)

D:\Python\Anaconda\envs\pyxem\lib\site-packages\pyxem\generators\calibration_generator.py in get_elliptical_distortion(self, mask_radius, scale, amplitude, spread, direct_beam_amplitude, asymmetry, rotation, center)
    167             )
    168         standard_dp = self.diffraction_pattern
--> 169         image_size = standard_dp.data.shape[0]
    170         if center is None:
    171             center = [(image_size - 1) / 2, (image_size - 1) / 2]

AttributeError: 'CalibrationDataLibrary' object has no attribute 'data'

[pc494]

Hi,

Sorry about the delay on getting back to you. It seems this demo is still running on 0.12, in the version you are using the generator is initialised with diffraction_pattern. So the line:

cal_lib = CalibrationDataLibrary(au_x_grating_dp=au_dpeg,
                                 au_x_grating_im=au_im,
                                 moo3_dp=moo3_dpeg,
                                 moo3_im=moo3_im)

Will need adjusting (probably by replacing au_x_gratingwith diffraction_pattern)